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Most B2B newsletters do not die from a bad send, but from a pace nobody can sustain: three polished issues in spring, a fourth one late, then nothing. Readers mostly remember the silence. Yet a newsletter that lasts brings what no social network guarantees: a regular appointment with people who asked to read you, in their inbox, with no algorithm in between.
This guide covers how to choose the frequency, what goes in each issue, what the law requires and how to know whether the newsletter is working. It complements the method for running an email campaign, which deals with the send itself: domain authentication, testing, measurement.
In short
The right frequency is the one the team sustains all year; monthly or fortnightly suits most B2B companies.
Every issue brings one thing useful to the reader’s job, and promotion stays in the minority.
A person signs it, and readers can reply to them.
Between businesses, in France, sending can rest on legitimate interest, provided the subject relates to the recipient’s job and unsubscribing is simple.
Judge by clicks, replies and enquiries; the open rate has become unreliable, and in France measuring it with a pixel now requires consent.
What is a B2B newsletter for?
Staying present with those who are not buying right now. In B2B, most of your future customers are not looking for a supplier this week; the day they are, they will think first of the names they know. A regular newsletter keeps that memory alive at low cost, with people who asked for it. It is also a channel you own: the list stays yours if a network changes its display rules.
It also serves sales. An issue that answers a question heard in a meeting becomes a link to send to a prospect, and readers’ replies tell you what is on the market’s mind.
What frequency should you choose?
The one you will keep. A monthly issue sent twelve times a year beats a weekly one abandoned in April. For most B2B companies, the right pace lies between one issue a month and one every two weeks: often enough to be remembered, spaced enough for each issue to have something to say.
Two questions settle it:
- Do you have enough to fill each issue? List the subjects of the next six issues. If the list runs dry at the third, space them out.
- Who writes it, and how long does it take? Measure the time the first two issues take, review included, and put it in the year’s marketing plan, otherwise it will be taken from something else.
Then let your readers correct you. After each send, look at unsubscribes and spam reports; if they rise, space out or tighten the content. Google sets precise thresholds for large senders:
messages a day to Gmail: above that, one-click unsubscribe becomes mandatory
spam complaint rate, the rate never to reach
the rate Google recommends staying under
What content keeps readers?
One useful thing per issue, at the top, that readers can apply or reuse in their work. The rest is secondary.
What works in B2B
- The answer to a customer question. The one you hear in meetings, covered in a few paragraphs. Sales provides one a week.
- A figure with commentary. A sourced data point from your sector, and what it changes for your readers.
- A real case. A problem met at a customer’s, with their agreement, and how it was solved, limits included.
- A short selection. Three reads of the month, each with a sentence saying why it matters.
What drives readers away
Promotion in every issue, generic texts you could read anywhere, and an anonymous sender. Sign it in a person’s name, with an address people can reply to: replies are often the newsletter’s best indicator, and the start of a sales conversation.
An issue can carry an offer, an event or an invitation to a webinar, as long as it is not the rule. Blog articles provide the material, and each issue points to a page of your site, not the other way round.
What the law requires
The CNIL, France’s data protection authority, distinguishes two situations in its page on commercial prospecting by email (in French):
To professionals
Sending can rest on legitimate interest when the subject relates to the recipient’s profession
They must have been informed of how their address is used and be able to object
To consumers
Prior consent is the rule
Exception: an existing customer, for similar products or services from the same company
In both cases, each issue says who sends it and lets people unsubscribe simply. The safest route remains voluntary sign-up, with the date and source page kept in the CRM: that is the proof you will be asked for, and the sign of a reader who expects your messages. To grow that list without buying a file, content offered in exchange for an email address is the most common route.
How do you measure a newsletter?
By what readers do: clicks on the main content, replies, contact requests and meetings that follow a send. The open rate says very little now. On iPhone, Mail Privacy Protection prevents the sender from knowing whether the message was opened.
Watch out
In France, measuring opens now requires consent
In its recommendation on tracking pixels in emails (in French), published on 14 April 2026, the CNIL classes these pixels as trackers. An exemption exists for individual deliverability measurement, limited to what is strictly necessary; other uses, such as audience measurement, require consent. For addresses collected before publication, the CNIL allows three months to inform recipients clearly and let them object.
In practice, ask your sending tool about the pixel, and base your measurement on clicks and replies, which do not depend on a pixel. To connect those clicks to sales, every link carries its campaign parameters and the CRM records them on the contact’s record: the full circuit is in our guide to automated marketing reporting.
A dormant list costs too
A subscriber list you never write to brings in nothing, and it ages: addresses change, people leave their jobs, and a send resumed after months of silence triggers more spam reports.
From the field
972 subscribers who had never received a message
On an online plush toy store we are putting back on its feet, the audit found 972 subscriber addresses that had given consent and had never been contacted, while only 3.2% of customers came back to buy again. The first job was not a new tool, but a sending rhythm the team could keep.
What can AI do in a newsletter?
It helps prepare, not sign. Summarising an article in a few lines, suggesting two subject lines to compare, sorting readers’ replies by topic: the time saved is real. The choice of subject, the figures and the tone stay with the person who signs, and everything that goes out in the company’s name is reviewed. We cover this split in our guide to marketing automation for SMEs, and what changes for marketing jobs in AI and digital marketing: what changes for agencies.
Where to start
Write the list of the next six subjects, choose the pace it allows, and name the person who signs. Check in the CRM that every subscriber has a source and a sign-up date. Then connect the newsletter to your other channels: an issue can pick up a leader’s post on LinkedIn. For readers in several countries, choose the markets first, as our guide to international SEO shows.
To follow each subscriber through to the sale, with their source, our digital marketing offer connects sending, the site and the CRM.
Frequently asked questions
What is the best frequency for a B2B newsletter?
There is no universal one. Choose the pace you will keep all year, often monthly or fortnightly, starting from the list of subjects you already have. Then adjust according to unsubscribes and spam reports after each send: if they rise, space your issues out.
Which day should you send a B2B newsletter?
Test rather than follow a general rule: send the same issue to two comparable halves of the list, at two different times, and compare clicks and replies over several sends. Then keep the winning slot, and stick to it: a regular appointment is something readers come to expect.
Can you send a newsletter to business contacts without their consent?
In France, the CNIL accepts legitimate interest between businesses if the subject relates to their job, if they were informed of how their address is used and can object simply. Rules differ by country, so check yours. Voluntary sign-up remains safer, and gives more attentive readers.
Do you need a newsletter if you already post on LinkedIn?
The two complement each other. LinkedIn shows your posts to whoever its algorithm chooses; the newsletter reaches those who asked for it, and the list belongs to you, even if the network changes its rules. A simple way to connect them: include the month’s best LinkedIn posts in the newsletter.
Sources
- Commercial prospecting by email (new tab)cnil.fr
- Mail Privacy Protection (new tab)support.apple.com
- Recommendation on tracking pixels in emails (new tab)cnil.fr
Jim · founder of Brain Plus AI
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